Stovepipe-elbow.



No. 678,8!0. Patented] My 86, 890i.

' 6. WILLIAM.

STOVEPIPE ELBOW.

A uaeion filed. Dec. '8, 1900.)

(No Model.)

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CHARLES WILLIAM, OF POTOSl, MISSOURl.

STOVEPiPE ELBOW.

SPECIFICATION forming part of Letters Patent No. 678,810, dated July 16, 1901. Application filed December 3, 1900. Serial No. 38,502. (No model.)

To all whom it may concern:

Be it known that I, CHARLES WILLIAM, a citizen of the United States, residing at Potosi, in the county of VVa-shington and State of Missouri, have invented a new and useful Stovepipe-Elbow, of which the following is a specification.

This invention relates to stovepipe-elbows, and has for its objects to provide an improved device of this character which is arranged to form a ventilator and a damper for regulation of the draft through the elbow'and also to provide for convenience in cleaning the interior of the elbow without removing the same from the pipe-sections to which it is connected.

With these and other objects in view the presentinvention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claim, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claim without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings, Figure 1 is a perspective view of theimproved stovepipe-elbow. Fig. 2 is a detail longitudinal sectional View thereof arranged as a ventilator. Fig. 3 is a similar view showing the device adjusted to form a damper.

Like characters of reference designate corresponding parts in all of the figures of the drawings.

Referring to the drawings, 1 and 2 designate the angularly-related tubular members of the elbow, of which the member 1 is ordinarily horizontal and projects at opposite sides of the upright member 2. Both members are open at their opposite ends, and the member 2 is located nearer one end than the other of the member 1, so as to form a rear projected end portion 3, the outer open end of which is normally closed by means of an external closure-plate 4, having a suitable handle 5 for applying and removing the plate.

Located within the member 1 is a tubular damper 6, which has its outer end connected to the closure-plate 4 in order that it may be controlled by means of the handle 5. This tubular damper has one side cut away for the greater part of its length, from the inner end toward the outer end thereof.

It will be understood that the tubular damper is rotatable within the elbow, so that it may be turned to the position shown in Fig. 3, whereby it closes the elbow member 2, so as to form a damper, and by adjustably rotating the damper the upright member of the elbow may be partly opened, so as to control the draft theret-hrough. Ordinarily the cutaway side of the damper is next to the inner end of the upright member of the elbow, so that said member may be entirely open for an unrestricted draft.

To provide for ventilation, the tubulardamper is drawn slightly outward until the short side thereof clears the rear end of the elbow member 1, as shown in Fig. 2, thereby forming a ventilating-opening 7, through which the external air may be drawn into the elbow and then outwardly through the Stovepipe, which is connected to the horizontal member of the elbow. By reason of the cut-away portion or short side of the tubular damper the inner end of the upright elbow member is unobstructed when the damper is pulled out to form a Ventilator.

The inner end of the tubular damper projects beyond the inner end of the elbow memher 2, so that the damper is designed to collect the soot and dirt which accumulate Within the pipe and ordinarily collect in the bend or angle of an elbow, and by removing the damper containing the dirt the latter may be cleaned therefrom, whereby the interior of the elbow may be conveniently cleansed without removing the same from the stovepipe.

From the foregoing description it is apparent that the present device may be conveniently adjusted to control the size of the draftpassage between the two members of the elbow and also adjusted to form a ventilator without in any manner obstructing the passage between the elbow members. Moreover, the adjustable and removable damper is arranged so as to collect the soot and dirt in order that they may be removed with the damper, whereby the elbow may be conveniently maintained in a clean condition. By rotating the cleaning device when at its inner limit the opposite longitudinal scraping edges formed by the cut-away portion will scrape the soot from the interior of the elbow member, and then the device may be drawn outwardly until the unchanged marginal portion clears the outer end of the elbow member, when the outer end of the device may be tilted slightly downwardly, so as to collect the soot in the receptacle formed by the end plate 4: and the adjacent imperforate portion of the tubular damper, thus obviating spilling of the soot.

It will be observed that the cut-away portion of the tubular damper forms an opening, so as to maintain an unobstructed passage between the two elbow members, and this opening is longer than the distance between the inner side of the elbow member 2 and the rear end of the entire elbow, so that when the damperis drawn outwardly to form a ventilator the inner end of the opening will be beyond the inner side of the elbowmember 2 in order that the latter may be unobstructed. Furthermore, the outer end of the opening normally lies outwardly beyond the outer or rear side of the member 2 when the damper is at its inner limit, so that in the opposite limits of the damper the elbow member 2 is unobstructed.

That is claimed is As a new article of manufacture, a stovepipe-elbow having its horizontal member projected in opposite directions beyond the vertical member and open at opposite ends, and an endwise -slidable and rotatable tubular damper and cleaning device mounted within the horizontal elbow member and projected across the inner open end of the vertical member to control the same, the outer end of the damper being closed, and provided with an external marginal flange for engagement with the adjacent end of the horizontal elbow member, and a handle upon the outer closed end of the damper, the inner end portion of the damper being cutaway longitudinally to form an opening for registration with the open upper end of the vertical elbow member, and

also to form opposite longitudinal scraping edges lying in frictional engagement with the interior of the elbow and terminated short of the outer closed end of the damper, the said closed end and the imperforate marginal portion of the damper forming a receptacle for the reception of the soot when the cleaning device is being removed from the elbow, and

the device being rotatable when at its innermost limit.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

CHARLES \VILLIAM. lVitnesses:

EDWARD SMITH, F. M. DEGGENDORF. 

